An accessory building other than a shed may be located in a side yard in an RA zone provided that the accessory building is removed from the side lot line a distance equal to the required side yard and from the principal building a minimum of ten feet (10 ft.).
A shed may be located in a required side yard of a principal building.
D.C. Mun. Regs. tit. 11, r. 11-F5004